In work we discovered a surface electrooptical effect for thixotropic layers. It is an appearance of the surface microrelief which dues to a dynamic scattering of light caused by its relief-phase modulation by the formed surface microrelief. Temperature range of this effect existence is very wide (from -80 degree(s) to +80 degree(s)C). Latter is distinguished from limit range of dynamic scattering effects for liquid crystal (from units to tens degrees). The aim of this paper is to investigate the nature of effect mentioned above and to consider its uses for different branches.